We studied photoinduced Kerr effect in cavity polaritons in a semiconductor microcavity by carefully measuring the time-resolved Kerr rotation and ellipticity spectra. The Kerr rotation angle of the microcavity polaritons is a hundred times larger than a conventional single quantum well. A spectral shape analysis of the observed spectra suggests that the photomdeced Kerr effect mainly results from a line broadening of the polarions due to spin-polarized polariton-polaritcm scattering. Enhancement in oscillator strength also contributes to the large rotation angle.
|ジャーナル||Physica Status Solidi (C) Current Topics in Solid State Physics|
|出版ステータス||Published - 2009 4 9|
|イベント||8th International Conference on Excitonic Processes in Condensed Matter, EXCON'08 - Kyoto, Japan|
継続期間: 2008 6 22 → 2008 6 27
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